The pedigree method and to some extent polycross method are motly used specially in India. But these methods are not popular because the restorer lines developed by these methods have narrow genetic base. So, the F1 hybrids are not performing better for seed yield and oil content. Is there any other methods for developing diverse restorer lines?
Hi Hari, you're right, but narrow genetic base is a general problem in sunflower.
I try to keep in mind that the origin of the R line has to be distant from the CMS you will use for the hybrid
A good way of broadening genetic base is the use of wild populations, good public lines developed from interespecific crosses are available, so it's a good idea to include them in your program.
(H-Hybrid, R-Male, A-cms Female, B-Maintainer)
RxR, RxH, HxH, RxB... some ideas
Thank you Pablo Hernández Fernández for your valuable suggestion.........
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